Remove Python 3.8 from builds

Author: m1so

.circleci/config.yml

@@ -263,7 +263,6 @@ jobs:
               ./gpu
 
 python-versions: &python-versions
-  - "3.8"
   - "3.9"
   - "3.10"
   - "3.11"
@@ -314,12 +313,6 @@ workflows:
           requires:
             - R << matrix.r-version >>
 
-      - build-and-push-gpu:
-          name: Tensorflow 2.9, Cuda 12.6, Ubuntu 20.04
-          cuda-version: "12.6.3"
-          ubuntu-version: "20.04"
-          tf-version: "2.9.1"
-          python-version: "3.8"
       - build-and-push-gpu:
           name: Tensorflow 2.11, Cuda 12.6, Ubuntu 20.04
           cuda-version: "12.6.3"
@@ -333,12 +326,6 @@ workflows:
           tf-version: "2.15.0"
           python-version: "3.11"
 
-      - build-and-push-gpu:
-          name: Tensorflow 2.9, Cuda 11.8, Ubuntu 20.04
-          cuda-version: "11.8.0"
-          ubuntu-version: "20.04"
-          tf-version: "2.9.1"
-          python-version: "3.8"
       - build-and-push-gpu:
           name: Tensorflow 2.11, Cuda 11.8, Ubuntu 20.04
           cuda-version: "11.8.0"